Finding the Fourth Proportional to 59.43, 89.47 and 51.99

Step by Step Solution

1. Step 1: Write the proportion equation
   59.43 : 89.47 = 51.99 : x
2. Step 2: Convert to fraction form
   59.43/89.47 = 51.99/x
3. Step 3: Cross multiply
   59.43x = 89.47 × 51.99
4. Step 4: Simplify right side
   59.43x = 4,651.55
5. Step 5: Solve for x
   x = 4,651.55/59.43
6. Step 6: Final answer
   x = 78.27